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Geometric Group Theory (GGT) Seminar
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This seminar series covers topics related to Geometric Group Theory. We usually meet on Friday, 13:45-15:00. If you have a question about this list, please contact: HoD Secretary, DPMMS; Macarena Arenas; Henry Wilton; Francesco Fournier-Facio. If you have a question about a specific talk, click on that talk to find its organiser. 3 upcoming talks and 140 talks in the archive. Recent progress towards the Putman-Wieland conjectureAdam Klukowski, Oxford. MR13. Friday 07 June 2024, 13:45-14:45 "Almost" Representations and Group StabilityBharatram Rangarajan, Hebrew University of Jerusalem. MR11. Friday 31 May 2024, 13:45-14:45 Hilbert-Schmidt stability, character theory and approximation properties of groupsAlon Dogon, Weizmann Institute of Science. MR13. Friday 24 May 2024, 13:45-14:45 Realizing finite subgroups of outer automorphism groups of RAAGsRuth Charney, Brandeis. MR13. Friday 17 May 2024, 13:45-14:45 The weight of groups and complexity of surface mapsLvzhou Chen, Purdue. MR11. Thursday 09 May 2024, 13:45-14:45 Group rings and hyperbolic geometryJoint GGT - DGT talk Grigori Avramidi, Bonn. MR13. Wednesday 08 May 2024, 16:00-17:00 Virtual fibration and incoherence of trivalent triangle groupsAna Isakovic, Cambridge. MR13. Friday 03 May 2024, 13:45-14:45 First-order logic and acylindrically hyperbolic groupsJonathan Fruchter, Bonn. MR13. Friday 01 March 2024, 13:45-14:45 A quasi-isometrically diverse class of bi-orderable solvable and residually finite groups via Taut Dehn spectraArman Darbinyan, Southampton. MR13. Friday 23 February 2024, 13:45-14:45 Generating RAAGs in 1-relator groupsAshot Minasyan, Southampton. MR13. Friday 16 February 2024, 13:45-14:45 Invariants of groups acting on buildingsIlaria Castellano, Bielefeld. MR11. Friday 09 February 2024, 14:30-15:30 Isomorphism Problems for Artin groupsAlexandre Martin, Heriot-Watt. MR13. Friday 26 January 2024, 13:45-14:45 Recognisably context-free subsets of groupsAlex Levine, Manchester. MR13. Friday 19 January 2024, 13:45-14:45 Asymptotically CAT(0) metrics and applicationsAlessandro Sisto, Heriot Watt. MR13. Friday 24 November 2023, 13:45-14:45 Approximating hyperbolic lattices by cubulationsEduardo Reyes, Max Planck Institute Bonn. MR13. Friday 17 November 2023, 13:45-14:45 Dyer groups: Coxter groups, right-angled Artin groups and moreMireille Soergel, MPI Leipzig. MR13. Friday 10 November 2023, 13:45-14:45 Free-by-cyclic groups and deficiencyMartin Bridson, Oxford. MR13. Friday 27 October 2023, 13:45-14:45 Profinite Recognition of Amalgamated FactorsJulian Wykowski, University of Cambridge. MR13. Friday 20 October 2023, 13:45-14:45 The space of traces of certain discrete groupsNote special date and venue Raz Slutsky, Weizmann Institute of Science. MR4. Wednesday 11 October 2023, 13:45-14:45 3-Manifold Groups Acting Acylindrically on TreesWilliam Cohen, University of Cambridge. MR13. Friday 06 October 2023, 13:45-14:45 Drilling Hyperbolic GroupsDaniel Groves, University of Illinois at Chicago. MR13. Friday 29 September 2023, 13:45-14:45 Sausages and Butcher PaperNote unusual day/time Danny Calegari, University of Chicago. MR13. Monday 11 September 2023, 14:00-15:00 Symmetries of the free-factor complex and commensurator rigidityMartin Bridson (University of Oxford). MR13. Friday 19 May 2023, 13:45-14:45 Coarse embeddings, and yet more ways to avoid themDavid Hume (Bristol). MR13. Friday 05 May 2023, 13:45-14:45 On profinite properties of free-by-cyclic groupsMonika Kudlinska (Oxford). MR13. Friday 28 April 2023, 13:45-14:45 Subgroups of hyperbolic groups, finiteness properties and complex hyperbolic latticesPierre Py (Université de Strasbourg). MR13. Friday 10 March 2023, 13:45-14:45 Growth and subgroups of Out(F_n).Yassine Guerch (ENS Lyon). MR13. Friday 24 February 2023, 13:45-14:45 Stable commutator length in free and surface groupsAlexis Marchand (University of Cambridge). MR13. Friday 17 February 2023, 13:45-14:45 The profinite and pro-p genus of free and surface groups.Ismael Morales (University of Oxford). MR13. Friday 10 February 2023, 13:45-14:45 Do moduli spaces of surfaces exist? and the mapping class group.Selim Ghazouani (UCL). MR13. Friday 03 February 2023, 13:45-14:45 The rates of growth in a hyperbolic groupKoji Fujiwara (Kyoto University). MR13. Friday 27 January 2023, 13:45-14:45 Computing high-dimensional group cohomology via dualityBenjamin Brueck (ETH Zurich). MR13. Friday 20 January 2023, 13:45-14:45 Amenable open covers of right-angled Artin groupsKevin Li (University of Regensburg). MR13. Friday 25 November 2022, 13:45-14:45 Hierarchically hyperbolic groups: an introductionJason Behrstock (Lehman College, CUNY). MR13. Friday 18 November 2022, 13:45-14:45 Detecting free factors in profinite completionsAlejandra Garrido (Universidad Autónoma de Madrid). Zoom. Friday 11 November 2022, 13:45-14:45 Braiding Groups of Homeomorphisms of the Cantor SetRachel Skipper (ENS-Paris). Zoom. Friday 04 November 2022, 13:45-14:45 Duality groups and Cohen-Macaulay spacesRic Wade (University of Oxford). MR13. Friday 21 October 2022, 13:45-14:45 Discrete group actions on 3-manifolds and embeddable Cayley complexes.Agelos Georgakopoulos (University of Warwick). MR13. Friday 14 October 2022, 13:45-14:45 Computing bounded cohomology of discrete groupsFrancesco Fournier-Facio (ETH Zurich). MR13. Friday 17 June 2022, 13:45-14:45 Quantifying lawlessness in finitely generated groupsHenry Bradford (University of Cambridge). MR13. Friday 27 May 2022, 13:45-14:45 Profinitely Rigid Seifert Fibered Spaces and Grothendieck’s ProblemRyan Spitler (Rice University). MR15. Friday 13 May 2022, 13:45-14:45 Codimension-1 subgroups of hyperbolic groups with spherical boundaryCorey Bregman (University of Southern Maine). Zoom. Friday 06 May 2022, 13:45-14:45 Laudenbach’s sequence for mapping class groups of connect sums of S^2 x S^1Tara Brendle (University of Glasgow). Zoom. Friday 29 April 2022, 13:45-14:45 A cubical Rips ConstructionMacarena Arenas (University of Cambridge). Friday 11 March 2022, 13:45-14:45 Whitehead's algorithm for free groups and the free factor complexDario Ascari (University of Oxford). Zoom. Friday 04 March 2022, 13:45-14:45 Euler characteristics for complexes of graphsKaren Vogtmann (University of Warwick). Zoom. Friday 25 February 2022, 13:45-14:45 The isomorphism problem for Artin groups.Nicolas Vaskou (Heriot-Watt University). MR13. Friday 18 February 2022, 13:45-14:45 Equations in periodic groupsRemi Coulon (University of Rennes). Zoom. Friday 11 February 2022, 13:45-14:45 Hyperplanes all over the placeAbdul Zalloum (Queen's University, Canada). Zoom. Friday 04 February 2022, 13:45-14:45 Title to be confirmedMikael de la Salle (Université de Lyon). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 28 January 2022, 13:45-14:45 A Deligne complex for Artin monoidsRachael Boyd (University of Cambridge). MR13. Friday 21 January 2022, 13:45-14:45 Fixed points of group homomorphisms and the Post Correspondence ProblemLaura Ciobanu (Heriot-Watt University). Friday 03 December 2021, 13:45-14:45 Groups acting properly on (products of) hyperbolic graphsJack Button (University of Cambridge). Friday 26 November 2021, 13:45-14:45 Character varieties of random groupsOren Becker (University of Cambridge). Friday 19 November 2021, 13:45-14:45 Parabolic subgroups of two-dimensional Artin groups and systolic-by-function complexesMartín Blufstein (Universidad de Buenos Aires). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 12 November 2021, 13:45-14:45 When does a one-relator group have a quasi-convex hierarchy?Marco Linton (University of Warwick). Friday 05 November 2021, 13:45-14:45 Hyperplanes all over the placeAbdul Zalloum (Queen's University, Canada). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 29 October 2021, 13:45-14:45 The taut spectrum and the Eilenberg-Ganea problemLuis Jorge Sanchez Saldana (UNAM). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 15 October 2021, 13:45-14:45 Combinatorics via Closed Orbits: Vertex Expansion and Graph Quantum ErgodicityAmitay Kamber (University of Cambridge) . Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 25 June 2021, 13:45-14:45 Geometric approximate group theoryMatt Cordes (ETH Zurich). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 11 June 2021, 13:45-14:45 Quasi-trees and product set growthAlice Kerr (University of Oxford). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 04 June 2021, 13:45-14:45 All finitely generated 3-manifold groups are Grothendieck rigidHongbin Sun (Rutgers). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 28 May 2021, 13:45-14:45 About higher graph manifoldsHaydeé Contreras Peruyero (UNAM). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709.. Friday 21 May 2021, 13:45-14:45 Algebraically hyperbolic groupsAlan Logan (Heriot-Watt University). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 14 May 2021, 13:45-14:45 Virtually unipotent elements of 3-manifold groupsSami Douba (McGill University). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 07 May 2021, 13:45-14:45 The compressed word problem in relatively hyperbolic groupsSarah Rees (Newcastle University). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709.. Friday 30 April 2021, 13:45-14:45 Rank gradient, cost, and simplicial volumeClara Löh (Universät Regensburg). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 12 March 2021, 13:45-14:45 Super-expandersAlexandros Eskenazis (University of Cambridge). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 05 March 2021, 13:45-14:45 Kaplansky's conjecturesGiles Gardam (University of Münster). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 26 February 2021, 13:45-14:45 Some elementary correspondence in group theory (with applications to algebra/geometry)D. B. McReynolds (Purdue University, Indiana). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 19 February 2021, 13:45-14:45 An algebraic approach to residually nilpotencyAndrei Jaikin-Zapirain (Autonomous University of Madrid). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 12 February 2021, 13:45-14:45 Curve Graphs and Surface Diffeomorphism GroupsSebastian Hensel (University of Munich). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 05 February 2021, 13:45-14:45 Cubulating groups acting on polygonal complexesCalum Ashcroft (University of Cambridge). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 29 January 2021, 13:45-14:45 Stable commutator length on RAAGsNicolaus Heuer (University of Cambridge). Zoom https://maths-cam-ac-uk.zoom.us/j/95208706709. Friday 22 January 2021, 13:45-14:45 Understanding wreath products and invariable generationCharles Cox (University of Bristol). Zoom: https://maths-cam-ac-uk.zoom.us/j/91636583222. Friday 04 December 2020, 13:45-14:45 Linear isoperimetric functions for surfaces in hyperbolic groupsMacarena Arenas (University of Cambridge). Zoom: https://maths-cam-ac-uk.zoom.us/j/91636583222. Friday 27 November 2020, 13:45-14:45 New examples of groups of intermediate growthVolodymyr Nekrashevych (Texas A&M). Zoom: https://maths-cam-ac-uk.zoom.us/j/91636583222. Friday 20 November 2020, 13:45-14:45 Random 3-manifolds with boundaryBram Petri (Sorbonne). Zoom: https://maths-cam-ac-uk.zoom.us/j/91636583222. Friday 13 November 2020, 13:45-14:45 Topological completions of quasi-actions and discretisable spacesAlex Margolis (Vanderbilt University). Zoom: https://maths-cam-ac-uk.zoom.us/j/91636583222. Friday 06 November 2020, 13:45-14:45 Accessibility of partially acylindrical actionsMichael Hill (University of Cambridge). Zoom: https://maths-cam-ac-uk.zoom.us/j/91636583222. Friday 30 October 2020, 13:45-14:45 Quasi-isometric rigidity of graphs of free groups with cyclic edge groupsDaniel Woodhouse (University of Oxford). Zoom: https://maths-cam-ac-uk.zoom.us/j/91636583222. Friday 16 October 2020, 13:45-14:45 Coherence of random groupsGareth Wilkes (University of Cambridge). Friday 13 March 2020, 13:45-14:45 Amenable groups and Noetherian group ringsPeter Kropholler (University of Southampton). Friday 06 March 2020, 13:45-14:45 Polynomial-time proofs that groups are hyperbolicColva Roney-Dougal (University of St Andrews). Friday 21 February 2020, 13:45-14:45 Counting incompressible surfaces in 3-manifoldsNathan Dunfield (University of Illinois). Friday 14 February 2020, 13:45-14:45 Ramanujan cubical complexes and non-residually finite groups in dimensions three and higherAlina Vdovina (Newcastle University). Friday 07 February 2020, 13:45-14:45 Approximate lattices in amenable groupsSimon Machado (University of Cambridge). Friday 31 January 2020, 13:45-14:45 Incoherence and virtual fibering of free-by-free groups.Robert Kropholler (Tufts University). Friday 24 January 2020, 13:45-14:45 Three dichotomies for connected unimodular Lie groups.David Hume (University of Oxford). Friday 06 December 2019, 13:45-14:45 Contractibility of acyclic 2-complexesIan Leary (University of Southampton). Friday 22 November 2019, 13:45-14:45 Approximate actions and Ulam stabilityOren Becker (University of Cambridge). Friday 08 November 2019, 13:45-14:45 Scl gaps in graph of groups and 3-manifoldsNicolaus Heuer (University of Cambridge). Friday 01 November 2019, 13:45-14:45 Quantifying local embeddings into finite groupsHenry Bradford (University of Cambridge). Friday 18 October 2019, 13:45-14:45 2,870,522 curves: Experimental evidence for Mirzakhani's TheoremMark Bell. Friday 12 July 2019, 13:45-14:45 Separability of nilpotent and solvable groupsMark Pengitore (Ohio State). Friday 28 June 2019, 13:45-14:45 Hyperbolic features of two-dimensional Artin groupsAlexandre Martin (Heriot-Watt). Friday 17 May 2019, 13:45-14:45 Random groups with fixed relator lengthsCalum Ashcroft (Cambridge). Friday 10 May 2019, 13:45-14:45 Structure of nilpotent approximate groups and applicationsRomain Tessera (Institut de mathématiques de Jussieu). Tuesday 09 April 2019, 13:45-14:45 Conjugacy Growth of Finitely Generated GroupsAlex Evetts (Heriot-Watt). Friday 15 March 2019, 13:45-14:45 Group actions on quasi-median graphs and acylindrical hyperbolicityMotiejus Valiunas (Southampton). Friday 22 February 2019, 13:45-14:45 Profinite rigidity and hyperbolic triangle groupsMartin Bridson (Oxford). Friday 15 February 2019, 13:45-14:45 Coxeter groups, quiver mutations and hyperbolic manifoldsAnna Felikson (Durham). Friday 08 February 2019, 13:45-14:45 Random triangular Burnside groupsJohn Mackay (Bristol). CMS, MR5 **note the UNUSUAL venue**. Friday 25 January 2019, 13:45-14:45 Residual properties of graphs of p-groupsGareth Wilkes (Cambridge). Friday 09 November 2018, 13:45-14:45 Geometric results on linear actions of reductive Lie groups for applications to homogeneous dynamicsRodolphe Richard (Cambridge). Friday 19 October 2018, 13:45-14:45 Homotopy type of the free factor complexRadhika Gupta (Technion). MR15. Friday 06 July 2018, 13:00-14:00 Arithmetic and Dynamics on Markoff-Hurwitz VarietiesAlexander Gamburd (CUNY). Friday 15 June 2018, 13:45-14:45 Joint spectral radius and joint spectrumEmmanuel Breuillard (University of Cambridge). Friday 25 May 2018, 13:45-14:45 Alternating quotients of right-angled Artin groupsMichal Buran (University of Cambridge). Friday 11 May 2018, 13:45-14:45 First order rigidity of higher rank arithmetic lattices (note the nonstandard day)Chen Meiri (Technion, Haïfa). Monday 05 March 2018, 13:45-15:00 Negative immersions for one-relator groupsHenry Wilton (University of Cambridge). Friday 09 February 2018, 14:00-15:00 A group-theoretic question arising in Typed set theoryThomas Forster (University of Cambridge). Friday 26 January 2018, 14:00-15:00 Kirillov's orbit method and polynomiality of the faithful dimension of $p$-groupsMohammad Bardestani (University of Cambridge). Friday 19 January 2018, 14:00-15:00 Commuting probability in infinite groupsMatthew Tointon (University of Neuchâtel). Friday 24 November 2017, 13:45-15:00 A Conjecture from 1986 about splittings of groups: its statement, potential generalizations, and Martin Dunwoody's proofPeter Kropholler (University of Southampton). Friday 09 June 2017, 13:45-15:00 (Leverhulme Lecture) Higher Teichmueller Theory: Geometric, Arithmetic, and non-Archimedean Aspects. Part 2 — On maximal representationsMarc Burger (ETH Zurich). Friday 17 March 2017, 13:45-15:00 Geometry of finite quotients of groupsNote unusual time, day and venue. Ana Khukhro (Neuchâtel). Seminar Room 2, Newton Institute Gatehouse. Thursday 23 February 2017, 10:00-11:30 On l^2-Betti numbers and their analogues in positive characteristicAndre Jaikin (Madrid). Friday 17 February 2017, 13:45-15:00 Weak forms of amenabilityErik Guentner (University of Hawaiʻi at Mānoa). Friday 10 February 2017, 13:45-15:00 Surface subgroups of graphs of free groups (part 2 of 2)Henry Wilton (University of Cambridge). Friday 03 February 2017, 13:45-15:00 Surface subgroups of graphs of free groups (part 1 of 2)Henry Wilton (University of Cambridge). Friday 27 January 2017, 13:45-15:00 Commensurability of right-angled Artin groupsIlya Kazachkov (Bilbao). Friday 02 December 2016, 13:45-15:00 Girth of random Cayley graphsPeter Varju (University of Cambridge). Friday 25 November 2016, 13:45-15:00 Triangles of groups, property (T), expanders and special quotientsHenry Wilton (University of Cambridge). Friday 18 November 2016, 13:45-15:00 Automorphisms of free and surface groups and their fixed pointsEnric Ventura (Universitat Politècnica de Catalunya). Friday 11 November 2016, 13:45-15:00 Commensuration index growthPierre-Emmanuel Caprace (Université catholique de Louvain). Friday 04 November 2016, 13:45-15:00 Correspondences between harmonic functions and algebraic properties of groups.Matthew Tointon (University of Cambridge). Friday 21 October 2016, 13:45-15:00 Embedding theorems, torsion, and quotients for groups.Maurice Chiodo (University of Cambridge). Friday 14 October 2016, 13:45-15:00 Please see above for contact details for this list. |
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